I typically like stuff like this to keep me properly focused especially when at work:
www.youtube.com
Other stuff I really dig:
View: https://youtu.be/o_6SlT3Yy10?si=S9iQ5h9LZx5Tq1L9
View: https://youtu.be/TNFSED77-GM?si=m98zM-CDLXhyBOO3
View: https://youtu.be/tH2w6Oxx0kQ?si=9FKyDpUOTlH1zGVc

The Best of Piano. Mozart, Beethoven, Chopin, Debussy, Bach. Relaxing Classical Music #63
Embark on a serene sonic voyage with Classical Masterpieces, and allow the enchanting notes of Mozart, Beethoven, Chopin, Debussy, and Bach to guide you. Wit...

Other stuff I really dig:
View: https://youtu.be/o_6SlT3Yy10?si=S9iQ5h9LZx5Tq1L9
View: https://youtu.be/TNFSED77-GM?si=m98zM-CDLXhyBOO3
View: https://youtu.be/tH2w6Oxx0kQ?si=9FKyDpUOTlH1zGVc